At the moment there is only about £50 between the two (depending where you get it). For me, the 3 didn’t work as an idea as they don’t do a small version. Had my 5S a few days now – can’t use it in anger due to my knee – but impressed so far. A very big step up from my VA1!!
I’ve got the none WiFi version so does it via Bluetooth. Sync is a lot better than on my old Garmin, but I have found I’ve needed still remind the phone/watch occasionally after an activity (just because they aren’t syncing constantly), but then it does it in seconds (including to Strava). Notifications come through straight away.
Has anyone got the 5x? Trying to work out if the map function is usable or a gimmick. You do have to have a helipad on your wrist for that version.
I’ve been tempted by a fenix 5 for a while but that offer one is the standard non sapphire glass version without wifi. And a dodgy coloured strap you’d have to buy a replacement for. A good price for a stupid expensive bit of kit but I think I’d be frustrated by the not have all the bells and whistles.
I’ve got the 5X, and got it for the mapping. Used it a few times and it has been genuinely useful. I also wear the watch daily and it doesn’t feel huge. My only complaint is the strap is crap and the buckle rubs.
I found the Fenix 5 too big. Ended up buying the newer Vivoactive 3 which does almost everything the 5 does but is way cheaper. Only penalty is that the battery life isn’t a long but that ain’t too big an issue.